{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn00827_003.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"San Pedro, California | 1891 | mapsnap generated fit (2026-10-22)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-22"},{"label":"run","value":"corpus-v2.1"},{"label":"pages","value":"8"},{"label":"placed","value":"6"},{"label":"unplaced","value":"2"},{"label":"fit sources","value":"georef 4, georef-snap 1, snap:0 1"},{"label":"key map","value":"none"},{"label":"split sheets","value":"2 sheet(s) cut into 3 panels"},{"label":"unplaced pages","value":"p1__2 (tier 4, 33.73681,-118.28237 +/-486m); p2 (tier 1, 33.74397,-118.27962 +/-253m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008271891:00827_1891-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Pedro, California | 1891 | sanborn00827_003 p3","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.50"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-22T13:07:52Z","modified":"2026-10-22T13:07:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008271891:00827_1891-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008271891:00827_1891-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1612.0,1510.1 1612.0,1520.6 1222.8,1807.6 1221.0,1874.1 1220.5,1912.0 1197.0,1912.0 1158.9,1912.0 1162.5,1739.2 483.6,1648.1 484.9,1728.6 305.2,1911.8 322.6,1843.7 113.6,1806.7 61.1,1679.9 51.1,67.8 349.6,52.4 976.7,170.8 1439.3,80.5 1491.7,155.0 1565.5,197.2 1477.6,722.3 1508.0,1043.2 1575.2,1095.3 1583.3,1483.4 1612.0,1484.3 1612.0,1510.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008271891:00827_1891-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[919.0,680.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-118.28044,33.7414497]}},{"type":"Feature","properties":{"resourceCoords":[503.0,680.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-118.2813442,33.7414509]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008271891:00827_1891-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Pedro, California | 1891 | sanborn00827_003 p4","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"},{"label":"confidence","value":"0.48"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-22T13:07:52Z","modified":"2026-10-22T13:07:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008271891:00827_1891-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008271891:00827_1891-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"249.3,1694.0 666.0,1694.0 663.2,1824.3 885.9,1859.1 1030.1,1816.5 1325.2,1889.8 1570.2,1876.5 1584.7,1833.3 1584.7,190.8 1527.6,68.2 1339.2,61.0 1339.0,96.0 961.7,370.9 959.6,435.0 958.8,471.6 899.4,471.2 903.9,304.4 249.1,212.6 249.8,290.3 75.4,466.1 34.0,623.5 113.0,688.7 111.6,1005.6 38.5,1235.8 87.2,1632.3 1.0,1633.8 1.0,1634.0 249.3,1694.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008271891:00827_1891-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[251.0,1694.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-118.2813709,33.7369272]}},{"type":"Feature","properties":{"resourceCoords":[666.0,1694.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-118.2804364,33.7369306]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008271891:00827_1891-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Pedro, California | 1891 | sanborn00827_003 p5","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-22T13:07:52Z","modified":"2026-10-22T13:07:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008271891:00827_1891-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008271891:00827_1891-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"49.0,1199.5 49.9,695.3 50.9,525.0 67.2,196.4 392.4,168.5 400.1,116.8 748.0,140.0 1046.3,212.2 1473.6,212.5 1470.6,346.2 1455.3,343.8 1451.0,1185.9 1481.2,1472.2 1452.8,1471.7 1449.8,1703.0 1039.4,1700.9 44.7,1692.0 49.0,1199.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008271891:00827_1891-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[71.0,1191.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-118.2835053242754,33.73513080074021]}},{"type":"Feature","properties":{"resourceCoords":[1458.0,702.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-118.28046513748573,33.736036619793225]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008271891:00827_1891-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Pedro, California | 1891 | sanborn00827_003 p6","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-22T13:07:52Z","modified":"2026-10-22T13:07:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008271891:00827_1891-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008271891:00827_1891-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"37.8,1112.5 50.7,1723.1 242.1,1816.5 1143.0,1785.7 1238.9,1850.7 1495.2,1840.9 1494.1,969.0 1564.2,646.0 1486.7,1.0 1458.4,1.0 1458.8,229.4 1051.9,233.4 65.4,239.2 69.1,1112.8 37.8,1112.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008271891:00827_1891-0006/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1046.0,1222.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-118.2814076,33.7323884]}},{"type":"Feature","properties":{"resourceCoords":[70.0,1720.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-118.2835792,33.731489]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008271891:00827_1891-0007__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Pedro, California | 1891 | sanborn00827_003 p7 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.94"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-22T13:07:52Z","modified":"2026-10-22T13:07:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008271891:00827_1891-0007__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008271891:00827_1891-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1538.8,47.4 1531.4,43.5 856.2,43.0 825.9,1049.0 819.7,1052.8 420.0,1052.8 187.6,1055.0 85.9,1108.5 93.1,1453.2 29.9,1586.7 55.1,1740.2 129.1,1768.1 94.1,1849.5 1540.6,1885.3 1541.5,1912.0 1556.3,1912.0 1572.8,1912.0 1559.4,1037.1 1551.0,548.0 1538.8,47.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008271891:00827_1891-0007__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[586.0,1546.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-118.2857325,33.7333177]}},{"type":"Feature","properties":{"resourceCoords":[1551.0,548.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-118.2835534,33.7351151]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008271891:00827_1891-0007__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Pedro, California | 1891 | sanborn00827_003 p7 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.77"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3278.8"},{"label":"split_canvas_h","value":"4211.2"}],"created":"2026-10-22T13:07:52Z","modified":"2026-10-22T13:07:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008271891:00827_1891-0007__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008271891:00827_1891-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"806.0,986.9 791.6,109.2 62.1,56.5 18.6,137.3 18.1,1000.4 733.5,1029.6 771.1,1029.1 806.0,986.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008271891:00827_1891-0007__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-118.28526641696351,33.739763555291105]}},{"type":"Feature","properties":{"resourceCoords":[819.7,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-118.28346096124888,33.73975156933282]}},{"type":"Feature","properties":{"resourceCoords":[819.7,1052.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-118.28347934078185,33.73780999434552]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1052.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-118.28528479649647,33.737821980303806]}}]}}]}